However, when Erbacher looked at skin tissue under the microscope, he noticed that nerve ... did not puncture the skin cell membrane and poke into the cytoplasm, like a needle piercing through flesh.

Let's take a look at how to observe cells under a microscope. No prizes for guessing the first thing you'll need: a microscope. But don't worry if you don't have one of your own. Ask your school ...

Let's take a look at how to observe cells under a microscope. No prizes for guessing the first thing you'll need: a microscope. But don't worry if you don't have one of your own. Ask your school ...